High tension line switch



Feb. 21, 1933. HL 1,898,387

HIGH TENSION LINE SWITCH Filed Dec. 25, 1929 2 Sheets-Sheet 1 INVENTOR.

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HIGH TENSION LINE SWITCH Filed Dec. 23, 1929 2 Sheets-Sheet 2 INVENTOR. 23

A TTORNEYS.

( 2263 val/#325 ..,,.2operating mechanism, mounted upon the Patented Feb. 21, 1933 PATENT GFFICE AUGUST J. PAHL, OF BERKELEY, CALIFORNIA HIGH TENSION LINE SWITCH 193 Another object of my invention is to provide a new and improved type of mounting for a switch of the above character, wherein a greater freedom of movement and flexibility between the parts is obtained.

A further object of my invention is to provide a new and novel type and arrangement of switch clips which is particularly well adapted to switches of the high tension transmission line type.

tion will be in part pointed out and in part evident from the following description, taken in connection with the accompanying drawings, wherein I have shown by way of illus- 25 tration and not of limitation a preferred embodiment of my invention.

In the drawings Fig. 1 is an end elevation showing two of my improved switches, together with their cross arm of a suitable pole,

Fig. 2 is a side elevation showing one ofthe switches illustrated in Fig. 1, taken along line 11-11,

Fig. 3 is an enlarged side elevation of a portion of the switch as illustrated in Fig. 2,

Fig. 4 is a plan view looking down upon the portion of my switch illustrated in Fig. 3,

Fig. 5 is a fragmentary view, partially in section, showing certain details of construction,

Fig. 6 is a sectional view in elevation taken along line VIVI of Fig. 5,

Fig. 7 illustrates an element of my invention, and

Fig. 8 is a fragmentary view in section showing the manner of attaching the line conductors to the switch members.

V In Fig. 1 of the drawings I have illustrated my invention as applied to a two wire trans- Other objects and advantages of my inven- Application filed December 23, 1929. Serial No. 415,929.

mission line with a switch disposed in each line so as to provide a single throw double pole circuit opening arrangement. In this illustration the switches are shown as in their closed position. The switches, which will be described in greater detail hereinafter, are shown as mounted upon a cross arm 10 carried by a pole 11 and are adapted to be actuated by means of a tie rod v12 which is oscillated by means of a double bell crank 13 to which movement is imparted by means of suitable operating members 14 and 15. The operating members 1% and 15, it will be understood, are of suiiicient length to extend down along the pole 11 to a point where the 5 switches may be operated without exposing the operator to any danger.

By referring now to Fig. 2, it will be seen that there is provided a support 16 upon the cross arm 10. The support 16 in turn is en- 70 gaged by insulator carrying caps 17 and 18,

respectively. The cap ,17 has a so-called skirt insulator 19 attached thereto and also a second insulator and cap 20. Projecting from the insulator 20 there is provided a 7 switch arm supporting member 21 which carries a switch arm 22. The member 21 also carries a suitable clamp or cable securing means 23, by means of which a power transmission cable 24: may be attached for the purpose of suspension and also for connection with the switch contacts. The cap 18, like the cap 17 also carries an insulator 19 and an additional insulator and cap 20, which in turn supports a second member'21 of a char- 8" acter similar to that just described. -This latter member 21 also carries a switch arm 25 which is adapted to co-operate with the arm 22, as will now appear.

The arms 22 and 25 are so disposed with respect to the insulators that they project thereover and their free ends project toward each other. Mounted upon the end of the. arm 22 I provide a contact making clip 26 of a well known type. so that its contact making surfaces are disposed substantially tangent with the arc of movement of the arms and mounted upon the arm 25, I provide a switch contact 27 of the knife blade type. This contact 27 is, lik the This clip-is mounted 9:

clip 26, disposed with its normal plane of contact on a tangent with the arc of movement of the arm. With this arrangement, it will be seen that, irrespective of the amount of sag of the conductor 24 by reason of freedom of movement between the support 16 and the insulators, the contact clips 26 and will always align. In this connection it should be stated that the switch blade con tact 27 is made sufficiently long to allow for of a new and improved supporting means for the suspension insulators. These features will now be described in connection with the remaining figures of the drawings.

By referring now to Figs. 3 and 4, it will L be seen that the support 16 consists of a pair of oppositely disposed angle irons through which a horizontally disposed member or shaft 28 extends. The cap 17 is shown as having formed integrally therewith a bifurcated extension 29 through which the shaft 28 extends in a horizontal direction, the two portions of the member 29 being disposed in spaced relation upon the shaft so that an axial extension 30 carried by the cap 18 may be disposed therebctween. The axial extension 30 is shown as having an eyelet 31 formed at the outer end thereof which surrounds the shaft 28 so that it may pivot about an axis extending substantially at right angles to the shaft 28. In order to afford this pivotal movement of the axial member 30, I provide in the outer end of the eyelet 31 a pivot pin or hearing 32 which will be de scribed in greater detail in connection with Figs. 5 and 6. At the outer end of the member 29 there is provided a semi-circular flange 33 and attached thereto there is shown a guide or hearing member 34 (see Fig. 7). This guide member 34 has a central opening 35 through which the axial extension 30 may extend when the parts are assembled and in which the part 30 may freely rotate. The central opening 35 has parts cut away on oppositely disposed sides so as to permit of insertion of the eyelet 31 of the member 30 through the opening in the assembling operation. Other holes or openings 36 are also provided by means of which the guide 34 is secured upon the member 29. These openings 36 are shown as elongated. so as to permit of a vertical adjustment of the guide 34 in order to adapt the insulators to the proper angle of sag. Vith this arrangement, it will be readily seen by inspection of Fig. 4 that the insulator cap 17 may freely pivot in a vertical plane about the shaft 28 and that the insulator cap 18 may freely pivot about an axis extending substantially axially through the insulators. The rotation of the cap 18, it will be understood, is provided for the purpose of obtaining a relative movement between the switch arms 22 and 25 for the purpose of opening and closing the transmission line circuit at the switch contacts 26 and 27. In order to impart this rotary movement to the insulator cap 18, I show a downwardly depending arm 37 upon the cap 18 which by means of a suitable clevis 38 is at tached to the tie-rod 12.

By referring now to Figs. 5 and (3, it will be seen that the pivot pin 32 projects into a suitable recess or socket 39 formed in the shaft 28. These figures of the drawings also clearly show that the axial extension 30 upon the insulator cap 18 is capable of rotation through an arc of substantially 90, which is sufficient movement to open any present known type of high tension air break switch.

A further feature of novelty in my inven tion is shown in Fig. 8. This feature resides in the particular construction of the clamping means 23, previously referred to. By refe ring to this figure of the drawings, it will be seen that the member 21 is provided with an open end 40 through which the cable 24 may be inserted. Immediately beyond the open end there is a second opening 41 which permits the cable to be drawn upwardly through the top of the member 21 to the clamping means 23 which consists of a clamping face 42 provided upon the member 21. Co-operating with the clamping face 42 and engaging the cable 24, I provide a plate 43 which may be securely fastened over the turn-back end of the cable by means of bolts 44.

While I have, for the sake of clearness and in order to disclose my invention so that the same can be readily understood, described and illustrated specific devices and arrangements, I desire to have it understood that this invention is not limited to the specific means disclosed but may be embodied in other ways that will suggest themselves, in view of this broad disclosure, to persons skilled in the art.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In a high tension disconnecting switch of the character described, the combination of a pair of oppositely disposed insulator supporting caps, a support for one of said caps comprising a horizontally disposed member which will permit the cap to oscillate in a vertical plane. and means carried by the other of said caps adapted to engage said horizontallydisposed member and permit said latter cap to rotate about an axis extending substantially axially through said insulator supporting caps.

2. In a high tension disconnecting switch of the character described, the combination of a pair of oppositely disposed insulator supporting caps, a horizontally disposed support, a bifurcated extension on one of said caps adapted to engage said support and between which an axial extension on the other of said caps may extend, and means carried by said axial extension also engaging said support whereby the latter may rotate about an axis extending substantially axially of said caps.

8. In a high tension disconnecting switch of the character described, the combination of a pair of oppositely disposed insulator supporting caps, a support for one of said caps comprising a horizontally disposed shaft which will permit the cap to oscillate in a vertical plane, and a pivot carried by the other of said caps adapted to engage said horizontally disposed shaft and permit said latter cap to rotate about an axis extending substantially axially through said insulator supporting caps.

t. In a high tension disconnecting switch of the character described, the combination of a pair of oppositely disposed insulator supporting caps, a horizontally disposed support, a bifurcated extension on one of said caps between which an axial extension on the other of said caps may extend, a horizontally disposed shaft upon said support adapted to extend through said bifurcated extensions and said axial extension, and means carried by said axial extension whereby the latter may rotate about an axis extending substantially axially of said caps.

5. In a high tension switch, the combination of a support, two members thereon pivotally and rotatably connected to each other, oppositely disposed strain insulators fast on each of said members, and an arm carried by each insulator, said arms comprising a switch openable and closable by rotation of said rotatable member.

6. In a high tension switch, the combination of a support, two members thereon pivotally and rotatably connected to each other, one of said members being connected to the said support and the other being rotatable, oppositely disposed strain insulators fast on each of said members, and an arm carried by each insulator, said arms comprising a switch openable and closable by rotation of said rotatable member.

7. In a high tension switch, the combination of a support, a pivot pin rotatably mounted on said support, insulators on each side of said pivot pin, an insulator on one side of said pivot pin being pivotally mounted on said pivot pin, an insulator on another side of said pivot pin being mounted on said pivot pin for rotation on its own axis, each of said insulators carrying cooperating switch arms.

8. In a high tension switch, the combi11ation of a support, two members thereon pivotally and rotatably connected to each other, one of said members being connected to said support and being rotatable, oppositely disposed strain insulators fast on each of said members, upstanding arms at the outer ends of each of said members, each of said members having an opening leading from the end thereof to said upstanding arm, clamping means on each upstanding arm to fasten a line conductor leading thereto through said opening, and cooperating switch members carried by said upstanding arms.

AUGUST J. PAHL. 

